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Scheduling Discovery

NOTE: It is recommended not to schedule the discovery task at the same time as the Database Maintenance

Execution Schedule, as the console is less responsive during database maintenance.

1. Click Manage → Discovery and Inventory → Common Tasks → Discovery Schedule.

2. In Discovery Schedule Settings:

a) Select the desired schedule parameters.

b) (Optional) You may adjust the task speed slider for faster task execution; however, more system resources are

consumed if the speed is increased.

c) Discover all instrumented devices.

Related Links

Discovery and Inventory Portal

Last Discovery and Inventory

Discovered Versus Inventoried Devices

Task Status

Discovery Speed Slider Bar

This control, also known as the discovery throttle, controls how fast discovery occurs and how much network and

system resources are consumed for discovery by controlling the:

• Number of discovery threads that are allowed to run at any point of time.

• Delay in between the communicating devices during a network ping sweep, in milliseconds.

NOTE: Each tick on the throttle control equals 10% and the range is from 10% to 100%. By default, in OpenManage

Essentials, the discovery throttle is set at 60%. After an upgrade from IT Assistant, the throttle control remains at its

previously set value.

Multithreading

Dell OpenManage Essentials improves upon the optimized parallel threading implementation in the Network Monitoring

Service introduced in IT Assistant.

As the discovery process is I/O intensive, you can optimize the process by making it a parallel operation, where threads

running in parallel (known as multi-threading) send requests and handle responses to several devices simultaneously.

The more threads that run in parallel, each communicating to a different device, the faster is the discovery; barring

overall high network congestion or latency. The discovery process, by default, allows a maximum of 32 threads to run in

parallel (or concurrently) at any one time for discovery.

To control the number of parallel threads executing, move the discovery throttle control either left or right. When set at

the maximum, 32 parallel threads are allowed to run. If the throttle is at 50%, only 16 threads are allowed to run at any

one time.

As the discovery service is optimized for parallel threading operations, the system can utilize more system resources

even at the same throttle setting. It is recommended that you monitor the system resources so that a satisfactory trade-

off is made between discovery speed versus system resources available for OpenManage Essentials. Lowering or

increasing the throttle depends on the system it is running on and the available resources. Note that the discovery

service may take up to several minutes to adjust to a new throttle setting.

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Dell V1.2 Manual de usuario Pagina 52